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I have a virtual server running on CentOS Linux 6 x64 OS. It uses SSD Accelerated RAID Storage, has 2GB RAM and is Running Drupal 7 on Apache.

I have noticed a repeating patter of spikes in the server load. These do not correlate to Cron, backups users or any scheduled admin operations.

Disk IO over 30 days

The spikes all seem to be around 8:00 pm UTC and the majority of them seem to hit the 0.75 mark with a could of obvious highs, lows and omission.

Is there anything I should be looking for or asking my service provider about?

UPDATE This appears to be cPannel updates. Now I need to research on how to minimise this or how often it really needs done.

Niccolo
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1 Answers1

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Some ideas:

  1. Check logs around that time - maybe some service is going to log that it's starting something periodic.

  2. Start a loop tomorrow just before 8pm, which will run snapshot ps with CPU measurement every 5 seconds. See which process is busy.

  3. Check the whole filesystem for files modified around 8pm.

viraptor
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